The year is 1770, and daring explorer Captain James Cook and his crew on the Endeavour are navigating the Pacific Ocean. Into their midst come strangers: the Doctor and Ian Chesterton, who are believed to have come from Venus. But the TARDIS is lost to them – along with both Susan and Barbara – and Ian makes an enemy of the ship’s chief scientist, Joseph Banks. A new adventure for the First Doctor as told by his companion, Ian Chesterton.